Stylographic pen.



G. N. HOSINGER.

STYLOGRAPHIC PEN.

APPLICATION FILED JAN.24. 19m.

Patented Apr. 8, 1919.

2 SHEETS-SHEET 2.

INVENTOR G0ly flflo5l zyr A; 4 TTORNEVS GEORGE N. HOSINGER, OF JERSEYCITY, NEW JERSEY.

STY'LOGRAPHIC PEN.

Specification of Letters Patent.

Patented Apr. 8, 1919.

Application filed January 24, 1918. Serial No. 213,513.

To all whom it may concern Be it known that I, GEORGE N. HosINoER, acitizen of the United States of America, and resident of Jersey City, inthe county of Essex and State of New Jersey, have invented certain newand useful Improvements in Stylographic Pens, of which the following isa specification.

This invention relates to improvements in stylographic pens.

It is the purpose of the invention to provide a smooth and evenlywriting stylographic pen of simple and durable construction and in whichthe usual air-tube which extends into the ink-reservoir is dispensedwith. By thus dispensing with the air-tube the capacity of the reservoirto hold the ink is much increased and the frequency with which thereservoir has to be refilled is correspondingly diminished.

It is a further purpose of this invention to provide such a constructionof the airpassage or passages that while freely delivering air to thereservoir to maintain a steady and uniform flow of the ink to the needlethe ink cannot he accidentally ejected in spurts through the air-passageto make blots on the paper.

It is a further purpose of the invention to so combine the ink-feed, theair-feed, and the needle that no resistance of the air as a bubble,film, or air-cushion, shall be formed to interfere with the constant anduniform flow of the ink to the needle-point when writing.

I have illustrated my invention in the accompanying drawin designatingthe parts by numera s and re erring to like parts by like numerals.

Figure 1 is an elevation of a stylographie pen partly in section.

Fig. 2 is a horizontal section thereof taken on the lines 22.

Fig. 3 is a detail of an internal member, while Fig. 4 is a rightangular View of the structure shown in Fig. 3.

Fig. 5 is an elevation of the tip.

Fig. 6 is an elevation of the parts 5 and 8 assembled with the ducts 7and 15 in alinement.

Fig. 7 is an elevation of the parts 5 and 8 assembled with the ducts 7and 15 out of alinement.

Fig. 8 is a section on line BB, Fig. 1, looking in the direction ofthearrows.

Fig. 9 is a section on the line CC, Fig. 1, in the direction of thearrow.

Figs. 10 and 11 are sections taken on the line 33 Fig. 1, Fig. 10looking in the direction of the arrow D, and Fig. 11 in the direction ofthe arrow E.

Fig. 12 is the same as Fig. 11, except that the aperture or duct 7 isturned out of the position shown in the former figure.

1 is the barrel of the pen closed at the upper end and screw-threaded atthe lower.

end as at 2, the hollow interior thereof as 3 serving as the reservoir.A screw-threaded tip 4 is tapered in line with the exterior of the stem1 and is externally screw-threaded to enter the screw-threaded aperture2 of said stem 1. Said tip 4 is also internally screw-threaded toreceive the point 5, the latter being illustrated in Fig. 5, where itwill be seen that a peripheral enlargement 6 is provided thereon whichis screw-threaded and that there is an aperture or duct 7 runningthrough said screw-threaded section. 8 is a cylindrical member viewed intwo right-angular positions in Figs. 3 and 4:. It is externallyscrew-threaded and provided with the aperture or duct 9. 10 is a loadedrod carrying at the end thereof a needle point 11 adapted to reciprocatein a duct 12 at the end of the point 5. When. the parts are assembled asshown in 1, it will be noted that there is a duct as 7 leading from apoint adjacent of the tip in a line parallel with the axis of the stemto a chamber 13 formed around the part 14. of the tip 5 and between thatpart and the wall of the tip 4, said chamber being closed by the lowerpart of the cylindrical member 8 when the same is screwed into theconical tip 4. In view of the fact that the cylindrical member 8- islongitudinally slotted as at 9 the portion of such slot indicated as 15forms a duct parallel with the axis of the stem and leading from thechamber 13 to the ink reservoir. It is within the scope of my inventionthat the ducts 7 and 15 should be in line to form a continuous ductbetween the atmosphere and the reservoir. On the other hand while it isessential that they should be parallel it may be desirable in someinstances that they should not be in line, that is to say, one

opposite the other, in which case the duct 7 leads into the chamber 13and the duct 15 leads from the chamber 13 into the reservoir, but notnecessarily directly in line with the duct 7.

I claim nothing new in the general construction and operation of thestylographic pen here described, except in so far as I have arranged theducts 7 and 15 and chamber 13.

I am aware that structures have been arranged wherein the air has beenled throng1 a duct as 7 into a chamber as 13 and wit drawn from saidchamber 13 into the reservoir from a point opposite that of the point ofintake and in a line at right angles to the axis of the stem, as forinstance in the United States patent to William W. vSanford, No.698,859, pat. April 29, 1902. In such structures I have observed thatthe channels through which the air is thus brought to the reservoirbecome clogged resulting in the inefficient operation of the pen,Whereas in the arrangement of ducts which I have arranged, that is tosay, where the ducts are arranged parallel with the axis of the stemleading through the chamber 13 to the reservoir a much more efficientand certain result is accomplished. Furthermore with such ducts it ispossible in an unlimbering of the pen to Wash out or cleanse said ductsshould the same for any reason become clog ed, but my experience is thatthey do not become clogged and that highly beneficial results areobtained by this arran ement.

hat I claim and desire to secure by Letters Patent is 1. A stylographicpen having an annular air chamber interposed between the ink reservoirsection and the point or stylus section, a duct parallel With the axisof the pen and leading from a point adjacent said stylus point to saidair chamber, a second duct also parallel with the axis of the pen andleading from said air chamber directly into said reservoir.

2. A stylographic pen having an annular air chamber interposed betweenthe ink reservoir section and the point or stylus section, one end ofsaid chamber being open, a duct parallel with the axis of the pen andleading from a. point adjacent said stylus point to the closed end ofsaid air chamber, a cap adapted to fit over the open end of said airchamber to close the same and a duct leading through said cap from theair chamber to the reservoir, said duct being parallel with the axis ofthe pen, said cap being rotatable on its axis so that the duct thereinmay be adjusted to take air from said air chamber at any point in itscircumference.

Signed by me at New York city, N. Y. this 23 day of January 1918.

GEORGE N. HOSINGER.

Witnesses: 4

Rose B. MAQKEY, 1 FLORENCE ATEN Ives.

